[47.01] Mutual events of the satellites of Uranus calculated with a new dynamical model

The present dynamical model of the motion of the satellites
of Uranus mostly used by the astronomers was made in 1986 by
Laskar and Jacobson and was based upon observations made
from 1911 to 1986. This dynamical model led to ephemerides
the accuracy of which decreased with time. We now need
better calculated positions to be able to predict the mutual
events and the eclipses by the planet which will occur in
2007-2008. These events, which occur only every 42 years,
will provide very accurate observations astrometric as well
as photometric describing the dynamics of these satellites
and their surfaces through the light curves observed. More,
the inclinations which are badly determinated by classical
astrometric observations should be constrained by the
observation of these events, very sensitive to it. For that
purpose, we developed a new dynamical model based on
observations made from 1827 to 2003 and calculated the
events. The magnitude of the satellites will make difficult
the observations. However, a large number of events will be
observable through a telescope of the 1 to 2 meters class.
New fast CCD cameras will be able to catch these valuable
events.

The author(s) of this abstract have provided an email address
for comments about the abstract:
arlot@imcce.fr